Thumbnail cute

when a thumbnail pic tricks you into enlarging it and then you say no way. No s/he ain't all that.

Ooh. I thought I was gonna private message a hottie, but then I enlarged his pic and he was just thumbnail cute. Damn, guuuurl.

by bamaSeth August 30, 2015

Thumbnail Cute

When someone is cute in their profile picture thumbnail, but is butt ugly when you click on it.

You: *Sees a potentially cute girl's thumbnail on Facebook* Ooh! *Click*

- Larger picture reveals that the girl has three tits and a giant zit -

You: Oh god, another Thumbnail Cute girl. *Vomit*

by TCutie August 29, 2010